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Wed, 7 Oct 2026 11:41:58 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav07.fra02v.mail.ibm.com (Postfix) with SMTP; Wed, 7 Oct 2026 11:41:58 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id 7BDEB1608CE; Wed, 07 Oct 2026 13:41:58 +0200 (CEST) From: Alexander Gordeev To: Gerald Schaefer , Heiko Carstens , Christian Borntraeger , Vasily Gorbik , Claudio Imbrenda , Andrey Ryabinin Cc: Muhammad Usama Anjum , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com Subject: [PATCH v8 02/15] mm: rename pointers to software PTE values as ptentp Date: Wed, 7 Oct 2026 13:41:45 +0200 Message-ID: <76c38f9eea5132fe56aafffc68d5c499f423a705.1791365932.git.agordeev@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA3MDA0NiBTYWx0ZWRfX+fY+IgbOtwY4 OpWN2uLcMS28bfINiICBAFqzw8N2KoMRVI1O67Qa26y5BAPl3x7GBPqtQIjvtXWIE04fbCGeP1A pmy4uXb33mlBk3VFxZ84h4LFFaKjGDc= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA3MDA0NiBTYWx0ZWRfXzkPi73YV188+ dawf8MKfaiyv2YWKW8lmnEV/r0RIh00DTVLSBVODNT8rHvC8wI0XPpv8ngVYpnPUcFy+pTr25Pj 964jSF5Z9lkIPTt/liYP9RYKt6ZchYGR2uZGmWCTqLcjtj4CMr4uCOtL75UyBgJC1Y4fZerQHoH E3Mm64xDcVo9yHMsDO7/oe+eRSIT+lNwI6bIZXJ5WNxe6R84pHEDvjPpP1CnHQtp6/NMhCKwb1e c4RRw0MKWck4YNj4KW5OiVjMh45E9wKEJqRPOzh49dZZFGL6yCdYLv96f1ctS13XJA9TJca2HxM lJyKKLGdVLbewxC68Xc/nDTNJx7wkZEx5Ll37Pw70I0HsQ9uAf8zN0uIDGMT7GB1xEF4Ms/qM30 EugUdkE2Q6nnbfjAvW9b5ZwNBKPp/CQNTK7yQrc47nirVLYn3D6aM0DBssWbonQKi8YfT3BmRQd W+9bCKt4gXhjJr4NrSg== X-Proofpoint-GUID: Eue0-3r4Z0cAnjS8exp06yeH6pO9gDCl X-Proofpoint-ORIG-GUID: T9jWbWBEm7D-IWe0zqIMM0rFSjO0bvE7 X-Authority-Analysis: v=2.4 cv=B7osQ+tM c=1 sm=1 tr=0 ts=6ac6300c cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=7CQSdrXTAAAA:8 a=VwQbUJbxAAAA:8 a=DykVs9dKbHxkzX7wQTQA:9 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-07_04,2026-10-06_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 bulkscore=0 malwarescore=0 impostorscore=0 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610070046 From: Muhammad Usama Anjum Some interfaces use pte_t * for a software PTE value rather than for an entry stored in a PTE table. These pointers must remain pte_t * when pointers to PTE table storage are converted to hw_pte_t *. Rename these parameters in the install_pte callback, write_protect_page(), and guard_install_set_pte() to ptentp. The later Coccinelle conversion skips pointers named ptentp, allowing it to convert the remaining PTE table pointers without changing these interfaces. Some functions already use ptentp for such pointers, including: - madvise_folio_pte_batch() - folio_pte_batch_flags() No need to rename them. This patch only renames parameters and makes no functional change. Acked-by: David Hildenbrand (Arm) Signed-off-by: Muhammad Usama Anjum --- include/linux/pagewalk.h | 2 +- mm/ksm.c | 4 ++-- mm/madvise.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/pagewalk.h b/include/linux/pagewalk.h index b41d7265c01b..c34d826c5e4a 100644 --- a/include/linux/pagewalk.h +++ b/include/linux/pagewalk.h @@ -89,7 +89,7 @@ struct mm_walk_ops { struct mm_walk *walk); void (*post_vma)(struct mm_walk *walk); int (*install_pte)(unsigned long addr, unsigned long next, - pte_t *ptep, struct mm_walk *walk); + pte_t *ptentp, struct mm_walk *walk); enum page_walk_lock walk_lock; }; =20 diff --git a/mm/ksm.c b/mm/ksm.c index 49d48d1e0998..892bf4a0d6e4 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -1291,7 +1291,7 @@ static u32 calc_checksum(struct page *page) } =20 static int write_protect_page(struct vm_area_struct *vma, struct folio *= folio, - pte_t *orig_pte) + pte_t *ptentp) { struct mm_struct *mm =3D vma->vm_mm; DEFINE_FOLIO_VMA_WALK(pvmw, folio, vma, 0, 0); @@ -1370,7 +1370,7 @@ static int write_protect_page(struct vm_area_struct= *vma, struct folio *folio, =20 set_pte_at(mm, pvmw.address, pvmw.pte, entry); } - *orig_pte =3D entry; + *ptentp =3D entry; err =3D 0; =20 out_unlock: diff --git a/mm/madvise.c b/mm/madvise.c index eeee82cf2b3f..c2133b36b24a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -1110,12 +1110,12 @@ static int guard_install_pte_entry(pte_t *pte, un= signed long addr, } =20 static int guard_install_set_pte(unsigned long addr, unsigned long next, - pte_t *ptep, struct mm_walk *walk) + pte_t *ptentp, struct mm_walk *walk) { unsigned long *nr_pages =3D (unsigned long *)walk->private; =20 /* Simply install a PTE marker, this causes segfault on access. */ - *ptep =3D make_pte_marker(PTE_MARKER_GUARD); + *ptentp =3D make_pte_marker(PTE_MARKER_GUARD); (*nr_pages)++; =20 return 0; --=20 2.53.0